re: SB -220 "restoration"
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> From: Rich... <2@mail.vcnet.com>
? A "complete restoration" means removing:
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A poor initial choice of words, maybe repair as needed,
refurbish and upgrade with "current amplifier technology,"
an often hotly debated topic on amps.
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> 1. the step-start mod... [snip]
I do like a step start and have them in many amplifiers, I've
not experienced power switch failures in SB-220's and
I have many and have worked on many. I was not
aware that it was a significant problem for the switch.
I like the step start to ease the filter bank back to normal
operating potentials.
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> 2. lower VHF -Q suppressors... [snip]
I'm using a modified version of your basic design. Never
had an amplifier "go poof" with your or my suppressors
on board.
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3. the high speed switching mod... [snip]
I most often use a different approach to keep the
original relays in operation and not hot switch.
Various options are possible...
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4. the glitch protection... [snip]
Should be added to any stock amplifier and left in
place. I would not remove any of said properly done.
I have found well intended mods which were so
poorly done, I've had to replace them, but glitch and
failure protection are a must have.
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cheers
skipp
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